I raced an 05 a few years ago. I had 12.81 to his 12.82. His mods included headers, intake, exhaust and DR's. I had intake, exhaust and Stage 2 flash. The GTO ran high 12's until a better driver which got it down to 12.5 or so. I can't remember. Video of the race is in the video in my sig. I have a video either on Google, Youtube or Streetfire that has just the GTO race. I just can't find it due to this goverment computer and the fact that my current time zone is 7 hours ahead of EST.
Smoke